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power of combined signals at the same or different frequncy

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R.Maher

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Hi all,
I need to design RF rectifier that operates at two signals.
I'm using ADS2009. I used P_ntone source from frequency domain sources as the input.
I need to simulate the circuit at two signals at the same and different frequencies, but I confused how to calculate the total input power from the two signals to calculate the efficiency of the rectifier .

could any one tell me how to calculate input power?

and for two signals at the same frequency, does the phase shift between the two signals affect the total power?
 

if you have two different signals, the RMS power is the addition of them. As their voltage peaks can add or subtract , the peak power can be up to 4 times the addition of the RMS power. If you have two signals of the same frequency , but different phases, you have one frequency who's amplitude is the vector sum of each component.
Frank
 

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